- /*
- * @(#)KeyStoreSpi.java 1.18 04/05/25
- *
- * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
- * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
- */
-
- package java.security;
-
- import java.io.*;
- import java.util.*;
-
- import java.security.KeyStore.*;
- import java.security.cert.Certificate;
- import java.security.cert.CertificateException;
-
- import javax.crypto.SecretKey;
-
- import javax.security.auth.callback.*;
-
- /**
- * This class defines the <i>Service Provider Interface</i> (<b>SPI</b>)
- * for the <code>KeyStore</code> class.
- * All the abstract methods in this class must be implemented by each
- * cryptographic service provider who wishes to supply the implementation
- * of a keystore for a particular keystore type.
- *
- * @author Jan Luehe
- *
- * @version 1.18, 05/25/04
- *
- * @see KeyStore
- *
- * @since 1.2
- */
-
- public abstract class KeyStoreSpi {
-
- /**
- * Returns the key associated with the given alias, using the given
- * password to recover it. The key must have been associated with
- * the alias by a call to <code>setKeyEntry</code>,
- * or by a call to <code>setEntry</code> with a
- * <code>PrivateKeyEntry</code> or <code>SecretKeyEntry</code>.
- *
- * @param alias the alias name
- * @param password the password for recovering the key
- *
- * @return the requested key, or null if the given alias does not exist
- * or does not identify a key-related entry.
- *
- * @exception NoSuchAlgorithmException if the algorithm for recovering the
- * key cannot be found
- * @exception UnrecoverableKeyException if the key cannot be recovered
- * (e.g., the given password is wrong).
- */
- public abstract Key engineGetKey(String alias, char[] password)
- throws NoSuchAlgorithmException, UnrecoverableKeyException;
-
- /**
- * Returns the certificate chain associated with the given alias.
- * The certificate chain must have been associated with the alias
- * by a call to <code>setKeyEntry</code>,
- * or by a call to <code>setEntry</code> with a
- * <code>PrivateKeyEntry</code>.
- *
- * @param alias the alias name
- *
- * @return the certificate chain (ordered with the user's certificate first
- * and the root certificate authority last), or null if the given alias
- * does not exist or does not contain a certificate chain
- */
- public abstract Certificate[] engineGetCertificateChain(String alias);
-
- /**
- * Returns the certificate associated with the given alias.
- *
- * <p> If the given alias name identifies an entry
- * created by a call to <code>setCertificateEntry</code>,
- * or created by a call to <code>setEntry</code> with a
- * <code>TrustedCertificateEntry</code>,
- * then the trusted certificate contained in that entry is returned.
- *
- * <p> If the given alias name identifies an entry
- * created by a call to <code>setKeyEntry</code>,
- * or created by a call to <code>setEntry</code> with a
- * <code>PrivateKeyEntry</code>,
- * then the first element of the certificate chain in that entry
- * (if a chain exists) is returned.
- *
- * @param alias the alias name
- *
- * @return the certificate, or null if the given alias does not exist or
- * does not contain a certificate.
- */
- public abstract Certificate engineGetCertificate(String alias);
-
- /**
- * Returns the creation date of the entry identified by the given alias.
- *
- * @param alias the alias name
- *
- * @return the creation date of this entry, or null if the given alias does
- * not exist
- */
- public abstract Date engineGetCreationDate(String alias);
-
- /**
- * Assigns the given key to the given alias, protecting it with the given
- * password.
- *
- * <p>If the given key is of type <code>java.security.PrivateKey</code>,
- * it must be accompanied by a certificate chain certifying the
- * corresponding public key.
- *
- * <p>If the given alias already exists, the keystore information
- * associated with it is overridden by the given key (and possibly
- * certificate chain).
- *
- * @param alias the alias name
- * @param key the key to be associated with the alias
- * @param password the password to protect the key
- * @param chain the certificate chain for the corresponding public
- * key (only required if the given key is of type
- * <code>java.security.PrivateKey</code>).
- *
- * @exception KeyStoreException if the given key cannot be protected, or
- * this operation fails for some other reason
- */
- public abstract void engineSetKeyEntry(String alias, Key key,
- char[] password,
- Certificate[] chain)
- throws KeyStoreException;
-
- /**
- * Assigns the given key (that has already been protected) to the given
- * alias.
- *
- * <p>If the protected key is of type
- * <code>java.security.PrivateKey</code>,
- * it must be accompanied by a certificate chain certifying the
- * corresponding public key.
- *
- * <p>If the given alias already exists, the keystore information
- * associated with it is overridden by the given key (and possibly
- * certificate chain).
- *
- * @param alias the alias name
- * @param key the key (in protected format) to be associated with the alias
- * @param chain the certificate chain for the corresponding public
- * key (only useful if the protected key is of type
- * <code>java.security.PrivateKey</code>).
- *
- * @exception KeyStoreException if this operation fails.
- */
- public abstract void engineSetKeyEntry(String alias, byte[] key,
- Certificate[] chain)
- throws KeyStoreException;
-
- /**
- * Assigns the given certificate to the given alias.
- *
- * <p> If the given alias identifies an existing entry
- * created by a call to <code>setCertificateEntry</code>,
- * or created by a call to <code>setEntry</code> with a
- * <code>TrustedCertificateEntry</code>,
- * the trusted certificate in the existing entry
- * is overridden by the given certificate.
- *
- * @param alias the alias name
- * @param cert the certificate
- *
- * @exception KeyStoreException if the given alias already exists and does
- * not identify an entry containing a trusted certificate,
- * or this operation fails for some other reason.
- */
- public abstract void engineSetCertificateEntry(String alias,
- Certificate cert)
- throws KeyStoreException;
-
- /**
- * Deletes the entry identified by the given alias from this keystore.
- *
- * @param alias the alias name
- *
- * @exception KeyStoreException if the entry cannot be removed.
- */
- public abstract void engineDeleteEntry(String alias)
- throws KeyStoreException;
-
- /**
- * Lists all the alias names of this keystore.
- *
- * @return enumeration of the alias names
- */
- public abstract Enumeration<String> engineAliases();
-
- /**
- * Checks if the given alias exists in this keystore.
- *
- * @param alias the alias name
- *
- * @return true if the alias exists, false otherwise
- */
- public abstract boolean engineContainsAlias(String alias);
-
- /**
- * Retrieves the number of entries in this keystore.
- *
- * @return the number of entries in this keystore
- */
- public abstract int engineSize();
-
- /**
- * Returns true if the entry identified by the given alias
- * was created by a call to <code>setKeyEntry</code>,
- * or created by a call to <code>setEntry</code> with a
- * <code>PrivateKeyEntry</code> or a <code>SecretKeyEntry</code>.
- *
- * @param alias the alias for the keystore entry to be checked
- *
- * @return true if the entry identified by the given alias is a
- * key-related, false otherwise.
- */
- public abstract boolean engineIsKeyEntry(String alias);
-
- /**
- * Returns true if the entry identified by the given alias
- * was created by a call to <code>setCertificateEntry</code>,
- * or created by a call to <code>setEntry</code> with a
- * <code>TrustedCertificateEntry</code>.
- *
- * @param alias the alias for the keystore entry to be checked
- *
- * @return true if the entry identified by the given alias contains a
- * trusted certificate, false otherwise.
- */
- public abstract boolean engineIsCertificateEntry(String alias);
-
- /**
- * Returns the (alias) name of the first keystore entry whose certificate
- * matches the given certificate.
- *
- * <p>This method attempts to match the given certificate with each
- * keystore entry. If the entry being considered was
- * created by a call to <code>setCertificateEntry</code>,
- * or created by a call to <code>setEntry</code> with a
- * <code>TrustedCertificateEntry</code>,
- * then the given certificate is compared to that entry's certificate.
- *
- * <p> If the entry being considered was
- * created by a call to <code>setKeyEntry</code>,
- * or created by a call to <code>setEntry</code> with a
- * <code>PrivateKeyEntry</code>,
- * then the given certificate is compared to the first
- * element of that entry's certificate chain.
- *
- * @param cert the certificate to match with.
- *
- * @return the alias name of the first entry with matching certificate,
- * or null if no such entry exists in this keystore.
- */
- public abstract String engineGetCertificateAlias(Certificate cert);
-
- /**
- * Stores this keystore to the given output stream, and protects its
- * integrity with the given password.
- *
- * @param stream the output stream to which this keystore is written.
- * @param password the password to generate the keystore integrity check
- *
- * @exception IOException if there was an I/O problem with data
- * @exception NoSuchAlgorithmException if the appropriate data integrity
- * algorithm could not be found
- * @exception CertificateException if any of the certificates included in
- * the keystore data could not be stored
- */
- public abstract void engineStore(OutputStream stream, char[] password)
- throws IOException, NoSuchAlgorithmException, CertificateException;
-
- /**
- * Stores this keystore using the given
- * <code>KeyStore.LoadStoreParmeter</code>.
- *
- * @param param the <code>KeyStore.LoadStoreParmeter</code>
- * that specifies how to store the keystore,
- * which may be <code>null</code>
- *
- * @exception IllegalArgumentException if the given
- * <code>KeyStore.LoadStoreParmeter</code>
- * input is not recognized
- * @exception IOException if there was an I/O problem with data
- * @exception NoSuchAlgorithmException if the appropriate data integrity
- * algorithm could not be found
- * @exception CertificateException if any of the certificates included in
- * the keystore data could not be stored
- *
- * @since 1.5
- */
- public void engineStore(KeyStore.LoadStoreParameter param)
- throws IOException, NoSuchAlgorithmException,
- CertificateException {
- throw new UnsupportedOperationException();
- }
-
- /**
- * Loads the keystore from the given input stream.
- *
- * <p>A password may be given to unlock the keystore
- * (e.g. the keystore resides on a hardware token device),
- * or to check the integrity of the keystore data.
- * If a password is not given for integrity checking,
- * then integrity checking is not performed.
- *
- * @param stream the input stream from which the keystore is loaded,
- * or <code>null</code>
- * @param password the password used to check the integrity of
- * the keystore, the password used to unlock the keystore,
- * or <code>null</code>
- *
- * @exception IOException if there is an I/O or format problem with the
- * keystore data, if a password is required but not given,
- * or if the given password was incorrect
- * @exception NoSuchAlgorithmException if the algorithm used to check
- * the integrity of the keystore cannot be found
- * @exception CertificateException if any of the certificates in the
- * keystore could not be loaded
- */
- public abstract void engineLoad(InputStream stream, char[] password)
- throws IOException, NoSuchAlgorithmException, CertificateException;
-
- /**
- * Loads the keystore using the given
- * <code>KeyStore.LoadStoreParameter</code>.
- *
- * <p> Note that if this KeyStore has already been loaded, it is
- * reinitialized and loaded again from the given parameter.
- *
- * @param param the <code>KeyStore.LoadStoreParameter</code>
- * that specifies how to load the keystore,
- * which may be <code>null</code>
- *
- * @exception IllegalArgumentException if the given
- * <code>KeyStore.LoadStoreParameter</code>
- * input is not recognized
- * @exception IOException if there is an I/O or format problem with the
- * keystore data
- * @exception NoSuchAlgorithmException if the algorithm used to check
- * the integrity of the keystore cannot be found
- * @exception CertificateException if any of the certificates in the
- * keystore could not be loaded
- *
- * @since 1.5
- */
- public void engineLoad(KeyStore.LoadStoreParameter param)
- throws IOException, NoSuchAlgorithmException,
- CertificateException {
-
- if (param == null) {
- engineLoad((InputStream)null, (char[])null);
- return;
- }
-
- if (param instanceof KeyStore.SimpleLoadStoreParameter) {
- ProtectionParameter protection = param.getProtectionParameter();
- char[] password;
- if (protection instanceof PasswordProtection) {
- password = ((PasswordProtection)param).getPassword();
- } else if (protection instanceof CallbackHandlerProtection) {
- CallbackHandler handler =
- ((CallbackHandlerProtection)param).getCallbackHandler();
- PasswordCallback callback =
- new PasswordCallback("Password: ", false);
- try {
- handler.handle(new Callback[] {callback});
- } catch (UnsupportedCallbackException e) {
- throw new NoSuchAlgorithmException
- ("Could not obtain password", e);
- }
- password = callback.getPassword();
- callback.clearPassword();
- if (password == null) {
- throw new NoSuchAlgorithmException
- ("No password provided");
- }
- } else {
- throw new NoSuchAlgorithmException("ProtectionParameter must"
- + " be PasswordProtection or CallbackHandlerProtection");
- }
- engineLoad(null, password);
- return;
- }
-
- throw new UnsupportedOperationException();
- }
-
- /**
- * Gets a <code>KeyStore.Entry</code> for the specified alias
- * with the specified protection parameter.
- *
- * @param alias get the <code>KeyStore.Entry</code> for this alias
- * @param protParam the <code>ProtectionParameter</code>
- * used to protect the <code>Entry</code>,
- * which may be <code>null</code>
- *
- * @return the <code>KeyStore.Entry</code> for the specified alias,
- * or <code>null</code> if there is no such entry
- *
- * @exception KeyStoreException if the operation failed
- * @exception NoSuchAlgorithmException if the algorithm for recovering the
- * entry cannot be found
- * @exception UnrecoverableEntryException if the specified
- * <code>protParam</code> were insufficient or invalid
- *
- * @since 1.5
- */
- public KeyStore.Entry engineGetEntry(String alias,
- KeyStore.ProtectionParameter protParam)
- throws KeyStoreException, NoSuchAlgorithmException,
- UnrecoverableEntryException {
-
- if (!engineContainsAlias(alias)) {
- return null;
- }
-
- if (protParam == null) {
- if (engineIsCertificateEntry(alias)) {
- return new KeyStore.TrustedCertificateEntry
- (engineGetCertificate(alias));
- } else {
- throw new UnrecoverableEntryException
- ("requested entry requires a password");
- }
- }
-
- if (protParam instanceof KeyStore.PasswordProtection) {
- if (engineIsCertificateEntry(alias)) {
- throw new UnsupportedOperationException
- ("trusted certificate entries are not password-protected");
- } else if (engineIsKeyEntry(alias)) {
- KeyStore.PasswordProtection pp =
- (KeyStore.PasswordProtection)protParam;
- char[] password = pp.getPassword();
-
- try {
- Key key = engineGetKey(alias, password);
- if (key instanceof PrivateKey) {
- Certificate[] chain = engineGetCertificateChain(alias);
- return new KeyStore.PrivateKeyEntry
- ((PrivateKey)key, chain);
- } else if (key instanceof SecretKey) {
- return new KeyStore.SecretKeyEntry((SecretKey)key);
- }
- } catch (UnrecoverableKeyException uke) {
- UnrecoverableEntryException uee =
- new UnrecoverableEntryException();
- uee.initCause(uke);
- throw uee;
- }
- }
- }
-
- throw new UnsupportedOperationException();
- }
-
- /**
- * Saves a <code>KeyStore.Entry</code> under the specified alias.
- * The specified protection parameter is used to protect the
- * <code>Entry</code>.
- *
- * <p> If an entry already exists for the specified alias,
- * it is overridden.
- *
- * @param alias save the <code>KeyStore.Entry</code> under this alias
- * @param entry the <code>Entry</code> to save
- * @param protParam the <code>ProtectionParameter</code>
- * used to protect the <code>Entry</code>,
- * which may be <code>null</code>
- *
- * @exception KeyStoreException if this operation fails
- *
- * @since 1.5
- */
- public void engineSetEntry(String alias, KeyStore.Entry entry,
- KeyStore.ProtectionParameter protParam)
- throws KeyStoreException {
-
- // get password
- if (protParam != null &&
- !(protParam instanceof KeyStore.PasswordProtection)) {
- throw new KeyStoreException("unsupported protection parameter");
- }
- KeyStore.PasswordProtection pProtect = null;
- if (protParam != null) {
- pProtect = (KeyStore.PasswordProtection)protParam;
- }
-
- // set entry
- if (entry instanceof KeyStore.TrustedCertificateEntry) {
- if (protParam != null && pProtect.getPassword() != null) {
- // pre-1.5 style setCertificateEntry did not allow password
- throw new KeyStoreException
- ("trusted certificate entries are not password-protected");
- } else {
- KeyStore.TrustedCertificateEntry tce =
- (KeyStore.TrustedCertificateEntry)entry;
- engineSetCertificateEntry(alias, tce.getTrustedCertificate());
- return;
- }
- } else if (entry instanceof KeyStore.PrivateKeyEntry) {
- if (pProtect == null || pProtect.getPassword() == null) {
- // pre-1.5 style setKeyEntry required password
- throw new KeyStoreException
- ("non-null password required to create PrivateKeyEntry");
- } else {
- engineSetKeyEntry
- (alias,
- ((KeyStore.PrivateKeyEntry)entry).getPrivateKey(),
- pProtect.getPassword(),
- ((KeyStore.PrivateKeyEntry)entry).getCertificateChain());
- return;
- }
- } else if (entry instanceof KeyStore.SecretKeyEntry) {
- if (pProtect == null || pProtect.getPassword() == null) {
- // pre-1.5 style setKeyEntry required password
- throw new KeyStoreException
- ("non-null password required to create SecretKeyEntry");
- } else {
- engineSetKeyEntry
- (alias,
- ((KeyStore.SecretKeyEntry)entry).getSecretKey(),
- pProtect.getPassword(),
- (Certificate[])null);
- return;
- }
- }
-
- throw new KeyStoreException
- ("unsupported entry type: " + entry.getClass().getName());
- }
-
- /**
- * Determines if the keystore <code>Entry</code> for the specified
- * <code>alias</code> is an instance or subclass of the specified
- * <code>entryClass</code>.
- *
- * @param alias the alias name
- * @param entryClass the entry class
- *
- * @return true if the keystore <code>Entry</code> for the specified
- * <code>alias</code> is an instance or subclass of the
- * specified <code>entryClass</code>, false otherwise
- *
- * @since 1.5
- */
- public boolean
- engineEntryInstanceOf(String alias,
- Class<? extends KeyStore.Entry> entryClass)
- {
- if (entryClass == KeyStore.TrustedCertificateEntry.class) {
- return engineIsCertificateEntry(alias);
- }
- if (entryClass == KeyStore.PrivateKeyEntry.class) {
- return engineIsKeyEntry(alias) &&
- engineGetCertificate(alias) != null;
- }
- if (entryClass == KeyStore.SecretKeyEntry.class) {
- return engineIsKeyEntry(alias) &&
- engineGetCertificate(alias) == null;
- }
- return false;
- }
- }